| 1. | A damping matrix equivalent method and its application in a kind of vibration problems
一类振动问题中阻尼矩阵的等效方法及应用 |
| 2. | ( 4 ) the modal information of beam before and after weighting is get through experiment . the damping matrix of the structure is also identified based upon the algorithm deduced in the paper
( 4 )对配重前后的弹性地基梁通过模态试验获取模态信息，并根据文中推出的识别阻尼矩阵的算法对阻尼矩阵进行了识别。 |
| 3. | On the basis of the hamilton ' s principle , the element mass matrix , stiffness matrix , and damping matrix caused by coriolis force of the finite method for the conveying fluid tubes were educed in the paper
本文用哈密顿变分式推导输送流体管道的有限元法分析单元质量矩阵、刚度矩阵和科里奥利力引起的阻尼矩阵。 |
| 4. | In time history analysis , the modification of damping matrix is presented . rayleigh damping model is adopted in main part and actual value is adopted in connected damping between main part and hanger
在时程分析中，对阻尼矩阵的形成提出了改进方法，即主体部分按瑞利阻尼模式计算，悬挂与核筒之间的联结阻尼按实际值输入。 |
| 5. | Then the vibration equations in the wheel / rail system dynamics are constituted again and the rigidity matrix , the damping matrix and the load matrix can be formed by different computer processor for the sake of increasing parallel computation efficiency
随后在公式级对轮轨系统动力学振动方程组的组建进行了优化，将组建刚度矩阵、阻尼矩阵和荷载列阵模块化。 |
| 6. | The mode superposition method , based on equivalent linearization and forcing decoupling method of non - classical damping matrix of energy dissipation systems , is the just one . at the same time , iterative process will increase computing workload and forcing decoupling method increase error
基于等效线性化的强行解耦振型分解法在一定程度上符合此要求，但此方法存在着迭代计算工作量大、强行解耦增大计算误差的不足。 |
| 7. | The centrosymmetric structural dynamical systems with damping were studied . the nearest triple matrix of the centrosymmetric with satisfying characteristic equations was found to a given triple matrix ( mass 、 stiffness and damping matrices ) . finally , numerical examples were given
3 .研究了阻尼中心对称结构动力模型修正问题,对给定的三重矩阵(质量矩阵、刚度矩阵和阻尼矩阵) ,求满足谱约束条件且具有中心对称特性的“最接近”的三重矩阵,并给出数值算例。 |
| 8. | Earthquake and wind ) , because of the damping matrixes of the two structures " motion equations are both non - classical , the dynamic equation ca n ' t be decoupled by the traditional real - mode analysis ( the mode - superposition method ) . though , in this thesis the complex - mode analysis is used to solve the stationary and non - stationary random earthquake response of structures and their analytic expressions are got . on the basis of these expressions , the optimal parameters of the two structures " isolation & seismic decrease equipment are analyzed
目前，基础隔震结构、 “加层减震” ( tmd减震)结构正逐步应用于工程实际，由于这两种结构在动力荷载(如地震、风)作用下动力方程中的阻尼矩阵为非经典情形，传统的实模态分析方法(振型分解法)不能使动力方程解耦，因此本文运用复模态分析方法求得了结构在平稳和非平稳随机地震激励下结构随机地震响应的解析表达式，在此基础上进行了基础隔震和tmd减震装置参数的优化分析。 |
